Don't compile Math as static library, as unused symbols are discarded.

Currently the files are compiled directly into Magnum library, static
library is used only for testing purposes.

src/CMakeLists.txt

@@ -19,10 +19,12 @@ set(Magnum_SRCS
     Shader.cpp
     SizeTraits.cpp
     Texture.cpp
+
+    Math/Math.cpp
 )
 
 add_library(Magnum SHARED ${Magnum_SRCS})
-target_link_libraries(Magnum CorradePluginManager CorradeUtility MagnumMath ${OPENGL_gl_LIBRARY} ${GLEW_LIBRARY})
+target_link_libraries(Magnum CorradePluginManager CorradeUtility ${OPENGL_gl_LIBRARY} ${GLEW_LIBRARY})
 
 install(TARGETS Magnum DESTINATION ${MAGNUM_LIBRARY_INSTALL_DIR})
 

src/Math/CMakeLists.txt

@@ -1,10 +1,12 @@
 include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 
-add_library(MagnumMath STATIC
-    Math.cpp
-)
-
 if(BUILD_TESTS)
+
+    # Add Math library for testing purposes
+    add_library(MagnumMath STATIC
+        Math.cpp
+    )
+
     enable_testing()
     add_subdirectory(Test)
 endif()